The cartridge- or converter-filled pen comes in three colors: Lumiere, DC Battery Blue and AC High Voltage Green. Price: $169 Retro 51 Tornado Popper Bandit Popper Tornado Bandit packaging.

The whole any-color pen thing started in 2014, when a gadget called the Scribble Ink pen hit Kickstarter.

I’ve always dreamed of having a stunning display of rainbow gel pens in my stationery shop, and finally bringing that vision ...

And because E Ink applies a color filter over a grayscale display, the resolution of color content is much lower than it is for black and white. The MobiScribe Wave tops out at 468 x 624 pixels ...